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Exam Code: Professional-Cloud-Network-Engineer
Exam Title: Google Cloud Certified - Professional Cloud Network Engineer
Vendor: Google
Exam Questions: 153
Last Updated: December 3rd,2024

Question 1

Your company has a Virtual Private Cloud (VPC) with two Dedicated Interconnect connections in two different regions: us-west1 and us-east1. Each Dedicated Interconnect connection is attached to a Cloud Router in its respective region by a VLAN attachment. You need to configure a high availability failover path. By default, all ingress traffic from the on-premises environment should flow to the VPC using the us-west1 connection. If us-west1 is unavailable, you want traffic to be rerouted to us-east1. How should you configure the multi-exit discriminator (MED) values to enable this failover path?

A. Use regional routin
B. Set the us-east1 Cloud Router to a base priority of 100, and set the us-west1 CloudRouter to a base priority of 1
C. Use global routin
D. Set the us-east1 Cloud Router to a base priority of 100, and set the us-west1 Cloud Router to a base priority of 1
E. Use regional routin
F. Set the us-east1 Cloud Router to a base priority of 1000, and set the us-west1 Cloud Router to a base priority of 1
G. Use global routin
H. Set the us-east1 Cloud Router to a base priority of 1000, and set the us-west1 Cloud Router to a base priority of 1

Correct Answer:A

Question 2

You have an application that is running in a managed instance group. Your development team has released an updated instance template which contains a new feature which was not heavily tested. You want to minimize impact to users if there is a bug in the new template.
How should you update your instances?

A. Manually patch some of the instances, and then perform a rolling restart on the instance group.
B. Using the new instance template, perform a rolling update across all instances in the instance group.Verify the new feature once the rollout completes.
C. Deploy a new instance group and canary the updated template in that grou
D. Verify the new feature in the new canary instance group, and then update the original instance group.
E. Perform a canary update by starting a rolling update and specifying a target size for your instances to receive the new templat
F. Verify the new feature on the canary instances, and then roll forward to the rest of the instances.

Correct Answer:D
https://cloud.google.com/compute/docs/instance-groups/rolling-out-updates-to-managed-instance-groups#startin https://cloud.google.com/compute/docs/instance-groups/rolling-out-updates-to-managed-instance-groups

Question 3

Your organization uses a Shared VPC architecture with a host project and three service projects. You have Compute Engine instances that reside in the service projects. You have critical workloads in your on-premises data center. You need to ensure that the Google Cloud instances can resolve on-premises hostnames via the Dedicated Interconnect you deployed to establish hybrid connectivity. What should you do?

A. Create a Cloud DNS private forwarding zone in the host project of the Shared VPC that forwards the private zone to the on-premises DNS servers.In your Cloud Router, add a custom route advertisement for the IP 35.199.192.0/19 to the on-premises environment.
B. Create a Cloud DNS private forwarding zone in the host project of the Shared VPC that forwards the Private zone to the on-premises DNS servers.In your Cloud Router, add a custom route advertisement for the IP 169.254 169.254 to the on-premisesenvironment.
C. Configure a Cloud DNS private zone in the host project of the Shared VPC.Set up DNS forwarding to your Google Cloud private zone on your on-premises DNS servers to point to the inbound forwarder IP address in your host projectIn your Cloud Router, add a custom route advertisement for the IP 169.254 169 254 to the on-premises environment.
D. Configure a Cloud DNS private zone in the host project of the Shared VPC.Set up DNS forwarding to your Google Cloud private zone on your on-premises DNS servers to point to the inbound forwarder IP address in your host project.Configure a DNS policy in the Shared VPC to allow inbound query forwarding with your on-premises DNS server as the alternative DNS server.

Correct Answer:D

Question 4

You created a new VPC for your development team. You want to allow access to the resources in this VPC via SSH only.
How should you configure your firewall rules?

A. Create two firewall rules: one to block all traffic with priority 0, and another to allow port 22 with priority 1000.
B. Create two firewall rules: one to block all traffic with priority 65536, and another to allow port 3389 with priority 1000.
C. Create a single firewall rule to allow port 22 with priority 1000.
D. Create a single firewall rule to allow port 3389 with priority 1000.

Correct Answer:C

Question 5

You are disabling DNSSEC for one of your Cloud DNS-managed zones. You removed the DS records from your zone file, waited for them to expire from the cache, and disabled DNSSEC for the zone. You receive reports that DNSSEC validating resolves are unable to resolve names in your zone.
What should you do?

A. Update the TTL for the zone.
B. Set the zone to the TRANSFER state.
C. Disable DNSSEC at your domain registar.
D. Transfer ownership of the domain to a new registar.

Correct Answer:C
Before disabling DNSSEC for a managed zone you want to use, you must deactivate DNSSEC at your domain registrar to ensure that DNSSEC-validating resolvers can still resolve names in the zone.